Filled-bag-sewing machine



May 6, 193@. v c s s ET AL 1,756,938

FILLED BAG SEWING MACHINE Filed Sept. 18, 1924 Y 4 Sheets-Sheet 1 May 6, 1930.

N. V. CHRISTENSEN ET AL FILLED BAG SEWING MACHINE Filed Sept. 18, 1,924 4 Sheets-Sheet 2 y 1930- N. v. CHRISTENSEN E AL 1,756,938

FILLED BAG SEWING MACHINE Filed Sept. 18, 1924 4 Sheds-Sheet 3 l 7 1 J. 1 Q 46 5 a 1. 6 4 Aw i May 6, 1930 v, HR|$TENsEN ET AL 1,756,938

FILLED BAG SEWING MACHINE Filed Sept. 18; 1924 4 Sheets-Sheet 4 Patented May :6, 1930 UNITED STATES PATENT OFFICE NORMAN v. cI RIsrENsEN AND WALTER m. IIA NnIIAN, or CHICAGO, ILLINo s, AS- SIGNOBS 'ro UNION SPECIAL MACHINE COMPANY, or CHICAGO, ILLINOIS, A cor.-

PQIB-ATION OI ILLINOIS rILLEn-BAe-sEwINe Macnmn Application filed September 18, 1924. Serial 1T6. 38,411;

, The inventionrelates to new and useful improvements in filled bag sewing machines, and more particularly to a machine of. this type wherein the stitching mechanism for 5 closing the bag travels back and forth in a straight line parallel with the'mouth of the obvious and will in bagduring the closing thereof. I An object of the invention is to provide a simplified machine of the above type wherein in all of the operating parts are supported by a single column, and wherein the carrier for the stitching mechanism ispositively moved back and forth."

A. further object of the'invention is to provide a machine of the above type .wherein the motor for operating the sewing head and the carrier on which the stitching mechanism is mounted, is carried by a bracket which is stationary so far as themovements of the stitching mechanism are concerned.

A further object of the invention is to proback and forth, and wherein the driving pulley for the sewing head is operated when said shaft is turned in one direction; and is disconnected when theshaft is turned in the other direction.

These and other objects will in part be 7 part be hereinafter more fully disclosed. 1 I

In the drawings which show by way of illustration one embodiment of the present invention Figure 1 is a side view of a filled bag sewing machine embodying the improvements, certain parts thereof being in vertical section to better show the construction of the machine; I

Fig. 2 is a plan view of the machine showing' part of the tracks and operating shaft for during the stitching of the filled bag, automatically reversed when the bag has been" stitched and 'fed back toward the column to its starting point, where the carrier is antomatically stopped.

vide means for driving the stitching mechanism which is autom'atically disconnected from the stitching mechanism when the carrier reaches its extreme outward position, and

operating parts for the carrier are all mountis reversed forbringing the stitchingmechae .v a

A still further object of the invention is to A further object of the invention is to proprovide a treadle for controlling the operathe carrier; I

Fig. 2- is a similar view showing the remainder-of' the-tracks, the operating shaft, and the carrier mounted thereon which carries the sewing head'back and forth;

Fig. 3 isfan enlarged side view of the supporting column, the bracket projecting therefrom, the tracks carried by the bracket, the

carrier movable on the tracks, and the sus-" I pended sewing'head;

Fig. 4 is a sectional view showing the means for preventing the carrier from leaving the tracks and alsotheconnecting belt between the operating shaft and the main shaft of the sewing head; 7

Fig. '5 is a sectional view showing the friction clutches for driving the operating shaft,

and also the'means for operating the belt wheel which drives the sewing head from said shaft;

Fig. dis a sectional View on the line 6- -6 ofFig.5. v v

In carryin out theinvention, a single col- 'umn is provi ed .for supporting the ope-ratin r and the movable. parts of'the improved fille bag sewing machine. On this column is.

mounted a sleeve which is capable of vertical adjustment thereon, and said sleeve is provided with a bracket projectin laterally from the column, which bracket has no lateral movement relative to the column, but moves up and down with the Sleeve. Onthis bracket is mounted the operating motor, which, of course, is stationary, and does not travel either out from or toward the column. Also mounted on this bracket are parallel tracks which extend out from the column a proper distance to provide sufficient travel by the carrierfor stitching the largest size sack which may be stitched on the machine. These tracks are connected at their outer ends, but

are preferably unsupported except from their connection and support by the column.

' Mounted on these tracksis a carrier which 7 connections with the motor, one moving in is preferably mounted on four rollers, two for each track, so that the carrier can move back and forth on the tracks, without tilting in any way. A sewing head is mounted on this carrier so thatsaid sewing head travels with the carrier. The sewing head is suspended from the carrier and is located wholly 20 eneath the tracks. The carrier is moved back and forth by an operating shaft which is mounted in the bracket carried by the sleeve and which bracket supports the tracks. This operating shaft,carries two clutch pulleys which are continuously driven by suitable one direction and the other in the other. The

shaft is capable of being clutched to eitherv oneof these rotating pulleys. The shaft has a screw thread formed thereon which passes through a threaded depending lug attached to the under side of the carrier. Mounted in this lug is the operating pulley for the sewing head, This pulley is carried by a sleeve and clutch devices are'provided so that when the sleeve is turned in one direction, it will rotate the pulley, and when turned in the opposite direction it will be disconnected 7 from the pulley. The sleeve. has a loose endwise sliding engagement with the shaft, and

the floor if found necessary, to maintain the column in upright position. For lighter machines, the base may be made heavy enough to sup ort the parts carried thereby without being olted tothe floor. Mounted on said column is a sleeve 3(see Fig. 3) which is a split sleeve, and is capable of being clamped to the column by means of clamping bolts 4,

.4. This is for the purpose of holding the sleeve in different vertical positions. Mounted in the column is a counterbalancing weight 5 to which a flexible member 6 is connected. Thls flexible member 6 runs over a pulley 7 and is connected at its upper outer end to a lug 8 formed as a part of the sleeve 3. Thus it is that the weight 5 counterbalances the sleeve and the parts carried thereby. The pulley 7 is mounted on a shaft 9 in turn mounted in a yoke bracket 10 attached to the upper end of the column. The flexible member 6 is given two or more turns about this pulley 7 so that when the pulley 7 is rotated, it will cause the flexible member 6 to move in one direction or the other for raising and lowering the sleeve 3. A hand wheel 11 is connected to the shaft 9 for the purpose of turning the shaft.

Extending outward from the sleeve 3 is a bracket 12 (see Fig. 2, where the bracket is shownin top plan view, and alsoliig. 1, Where the bracket is shown in front elevation). Mounted on thisbracketinany suitable way, is a motor 13 which is connected to a suitable source of supply so that the motor may 'be utilized for operating the machine. The

motor carries a pulley wheel 14 which is relatively wide, and there are two belts 15 and 16, which run onthis pulley 14. The belt 15 is a straight belt, while the belt 16 is a cross belt. The belt 15 runs over a friction clutch member 17 which is mounted to turn freely on a shaft 18. The cross belt 16 runs over a clutch pulley 19. Said ulley 17 is provided with ahub 20 and the pn ley'19 is mounted on this hub so as to turn freely thereon. Said pulley 19 is held on the hub by means of a nut 21. It will be understood that the pulley 17 I rotates in one direction, while the pulley 19 rotates in the opposite direction. Pinned to the shaft 18 by means of a key 22 is a clutchmember 22 which is adapted to cooperate with the clutch pulley 17. Said clutch pulley and clutch member have inclined, faces which will grip each other into contact. Also pinned on the shaft 18 by means of a key 23 is a clutch member 23 which likewise has abeveled surface adapted to be engaged by the her eled surface on the clutch pulley'19 when said pulley is moved in the right direction to bring these surfaces into contact. A collar 24 is mounted between the clutch pulleys 17 and 19 (see Fig. 5) and this collar is moved either to the right or left as viewedin said figure, by means of a shifting yoke lever 25. This yoke lever 25 is provided with pins 26 which extend. into an annular groove 27 formed in the col-' lar 24. The yoke lever 25 is rigidly secured to a rod 28 by means of a screw 29. This rod 28 is mounted to move freely in an endwise direction in the bracket 12. A spring 30 is secured at one end to the yoke lever 25 and at its other end to one of the side members of the bracket 12, and normally operates to move the rod 28 to the right as viewed in Figures 1 and 2, and this will cause the clutch pulley 19 to engage the clutch member 23 and turn the shaft 18 in a clockwise. direction as viewed from the left-hand end thereof. A flexible member 31-runs over the pulley 32 mounted on :1 lug 33 carried by the other side member of the bracket 12, and this flexible member is connected to the yoke lever 25. Said fiexi ble member 31 is also connected to a treadle 34 pivoted at 35 to a bracket 36 attached to the floor on which the column of the filled bag sewing machine is mounted, and said treadle 34 has a foot portion 37- and an arc-shaped portion 38. When the treadle is depressed,

the flexible member will be pulled upon, and 7 thus it is that the rod 28 is moved to the left, and this will bring the clutch pulley 17 into engagement with the clutch member 22 and cause the shaft 18 to turn in the opposite direction, that is, counter-clockwise direction.

Mounted in. the bracket 12 are two track members 39 and 40. These track members are rigidly connected to the bracket in any suitable way, and extend out in a lateral direction from the main supporting column 1. The outer ends of these track members are connected by means of a bracket 41 which is clamped thereto by means of set screws 42,

42. This makes a rigid connection ,for the outer end of the track members, which prevents said track members .frommoving toward each other, but it has nothing to do with the illustrated embodiment of theinvention in the supporting of these track members. Said track members-are supported entirely by the bracket 12 and extend outwardly therefrom. The shaft 18 extends through the right-hand side member of the bracket 12 and the full length of the track members 39 and and has a bearing at 43 in the bracket 41. A thrust bearing 44 is provided at a point adjacent the bracket 41 to prevent said shaft 18 from moving endwise through the bracket 41. A thrust bearing 45 is also provided adjacent the bracket 12 to prevent the shaft 18 from moving to the left through this bracket member 12. Mounted on the track members 39 and 40 is a carrier 46. Said carrier 46 has a platform member provided with upturned members 47, four in number, and to each upturned member 47 there is secured aroller or wheel 48 which is grooved so as to run on the track members 39 and 40. There are two wheels" on the track member 39 and two on the track member 40. In between the Wheels at each side of the carrier there are dependingmembers 49, one at each side. The sewing head indicated at 50 in the drawings is mounted on these depend-. ing members. The member at the right as viewed in Fig. 3, is secured to the sewing head by means of a bolt 51, while the member at' the left as viewed in Fig.3, is secured to the head by means of a bolt 52. This sewing head includes the usual needle bar 53 and presser foot 54 which are mounted on an overhanging arm 55. The feed of the machine is mounted in the cylindrical bed 56 and likewise the looper. This is the ordinary cylincarrier is a depending lug 59 which has a threaded section 60 adapted to be engaged by the thread 58 on the shaft. This is 'for the,

purpose of moving the carrier back and forth when theshaft is rotated. This depending lug 59 is provided with a recess 61. A sleeve 62 is mounted in said recess. This sleeve has an opening sufliciently large to freely slide over the thread 58 on the shaft 18. The sleeve 62 is held in the lug 59 by means of a nut 64. Mounted on this sleeve 62 is a driving pulley 65. Said sleeve 62 is provided with a hub 66. The diameter of this hub is slightly less than the diameter of the nut 64, so that the sleeve may be inserted through the opening closed by said nut 64, and the nut 64 will engage the right-hand face of the hub and prevent the sleeve from moving in the lug 59. The shaft is provided with a longitudinal groove 67 which extends the full length of the shaft. Said sleeve 62 is provided with a spline 68 which engages the groove in they shaft. The sleeve slides freely in an endwise direction on said shaft. The rotations of the shaft in either direction will, through the spline and groove connection,.rotate the sleeve. Said spline has its ends turned out so that the spline is thus held in the sleeve 62. The hub of the sleeve 62 is formed with recesses 69, three in number. The inner faces 70 of these recesses are inclined relative to the circumference of the hub. In each re-- cess there is a. clutch roller 71. Theseclutch rollers 71 are moved outwardly through the shaping of the recesses 69. until they are caused to grip the inner surface 72 of a concentric recess formed in the drivingpulley From the above, it will be noted that when the shaft 18 turns in one direction, it will direction, the clutch rollers will be disengaged from the pulley and no movement will be imparted to this pulley.

A belt 73 runs over the pulley 65 and thence over idlers 74 mounted on a bracket 75 carimpartto the driving pulley 65 a rotation, but when the shaft is turned in the opposite inthe opposite direction andis unclutched from this driving pulley 65.

From the above it will be apparent that when the shaft 18 is drivenin one direction, it will move the carrier outward away from the supporting column 1, and at the same time will operate the sewing head to cause the stitching mechanism carried thereby to stitch and close the mouth of a filled bag presented to this sewing head. The sewing head travels across the bag as it is stitched, and the feed of the machine merely controls and delivers the material of the bag to the stitching mechanism. By this we mean that the sewing head travels while the bag stands still, and in order to get a smooth stitching and closing of the mouth of the bag, the feeding of the machine merely helps the material to pass underneath the presser foot which is traveling along the mouth of the bag as it is stitched.

The bag beingstitched may be placed on the fioor underneath the tracks on which the sewing head travels, or may be placed on the platform of weighing scales or any other suitable support. The operator after placing the bag underneathgthe sewing head, will step on the treadle, this will shift the rod 28 so as to connect the clutch member. 22 to the driven clutch pulley 17, and this will rotate the shaft 18in such direction as to move the carrier outwardly toward the ends of the tracks, and the shaft will at the same time operate the sewing head. When the carrier approaches the end of the tracks, an adjustable collar 77 fixed'to the rod will be engaged by a lug 7 8 through which said rod passes, and which lug is fixed to the under side of the carrier, and this will move the rod 28 to the right as viewed in Fig. 2, which will carry the clutch pulley 19 into engagement with the clutch member 23, and at the same time, disconnect the clutch pulley 17 from the clutch member 22, and thus it is that the shaft 18 will be reversed in its rotation and will cause the carrier to move back to starting position. Likewise, if the treadle .is released, the spring 30 will move the rod 28 to the right as viewed in Fig. 2 and accomplish the same result. As the carrier returns to a position adjacent the collar, the de ending lug 78 will engage a fixed collar 7 adjustably secured to said rod, and this will shift the yoke lever so as to disengage the clutch pulleys from the clutch members and sto further movement of the carrier.

rom the above it will be apparent that we have provided a filled bag sewing machine wherein all of the parts for stitching the bag are mounted on a single column, and in which the carrier for the sewing head travels 0ut wardly from the ,column during the stitching of the bag and is then returned again to starting position at a point adjacent the column. The moving parts of themachine are operated by a motor which is stationary and does not ra el with the sewing head, so that the parts which travel are made as light as possible.

1. In a filled bag sewing machine, the combination of a support, a vertically adjustable bracket carried thereby, tracks mounted on said bracket and projecting laterally therefrom, a carrier movable back and forth on said tracks, a sewing head mounted on said carrier, a motor mounted on said bracket, and devices operated by said motor for moving said carrier back and forth on said tracks and for operating the sewing head when the carrier is moving in one direction only. 2. In a filled bag sewing machine, the combination of a support, a vertically adjustable bracket mounted thereon, tracks carried by.

the bracket and projecting laterally therefrom, a carrier movable back and forth on said tracks a sewing head mounted on the carrier and depending therefrom, a motor mounted on the bracket, an operating shaft carried by the bracket and the tracks, said shaft having a thread formed thereon, and said carrier hav-. ing a depending lug engaging said thread so that when the shaft is rotated in one direction, the carrier is moved outwardly from the bracket, and when the shaft is rotated in the opposite direction, the carrier is returned, and means operated by the motor for rotating said shaft in opposite directions. i

3. In a filled bag sewing machine, the combination of a support, a vertically adjustable bracket mounted thereon, tracks carried by the bracket and projecting laterally therefrom, a carrier movable back and forth on said tracks, a sewing head mounted on the carrier and depending therefrom, a motor mounted on the bracket, an operating shaft carried by the bracket and the tracks, said shaft having a thread formed thereon, and saidcarrier having a depending lug engaging said thread so that when the shaft is rotated in one direction the carrier is moved outwardly from the bracket, and when the shaft is rotated in the opposite direction, the

bination of a support, a vertically adjustable 1 from,a carrier movable back and forth on said tracks, a sewing head mounted on the carrier and depending therefrom, a motor mounted on the bracket, an operating shaft carried by the bracket and the tracks, said shaft having a thread formed thereon, and said carrier having a depending lug engaging said thread so that when the shaft is rotated in one'direction, the carrier is moved outwardly from the bracket, and-when the shaft is rotated in the opposite direction, the carrier is returned, means operated by. the motor for rotating said shaft in oppositedirections, and means operated -by said shaft for actuating the sewing headwhen the shaft is rotated in onedirection only. g

5. In a; filled bag sewing machine, the combination of a support, a vertically adjustable bracket mounted thereon, tracks carried by the bracket and projecting laterally therefrom, a carrier movable back and forth on said tracks, a sewing head mounted on the carrier and depending therefrom, a'motor mounted on the bracket, an operating shaft carried by thebracket and the tracks, said shaft havinga 'thread formed thereon, and said carrier'having a depending lug engaging said thread so that when the shaft is r0- tated in one direction the carrier is movedoutwardly from the bracket, and when the shaft is rotated in the opposite direction, the carrier is returned, friction clutch members carried by the shaft, a pulley carried by the motor, means for connecting said pulley with one clutch member for rotating the'shaft in one direction and with the other clutch memcarried by the bracket and the tracks, said shaft having a thread formed thereon, and

said carrier having a depending lug engaging said thread'so that when the shaft is rotated in one direction the carrier is moved outwardly from the'bracket, and whenthe shaft is rotated in the opposite direction, the

carrier. is returned, friction clutch members carried by the shaft, a pulley carried by the motor, means for connecting said pulley with one clutch member for rotating the shaft in one-direction and with the other clutch member fegggrotating the shaft in the opposite directiongiand' a treadle control means for shifting the friction clutch members for connectin the shaft to the motor. v

d. In a filled bag sewing machine, the con;-

bination of a supporting column, a sleeve mounted on said column fo'rvertical adjustment, a bracket connected to said sleeve,

tracks carried by the bracket'and extending outwardly away from the column, a carrier,

mounted on said tracks, a sewing head mounted on' said carrier, 2. motor mounted on the bracket, devices controlled by the operator for rotating said shaft in one direction or the other, and means mounted on said carrier for causing said carrier'to travelflin one direction when the shaft is rotated in a' clockwise direction and for causing said carrier to move in the opposite direction when the shaft is rotated in acounter-clockwise direction. v

mounted on said column for'vertical adjustment, a bracket connected to said sleeve,. tracks carried by thebracket and extending outwardly away from the column, a carrier mounted on said tracks, a sewing-head mou'nted on said carrier, a motor mounted on the bracket, devices controlled by the operator for rotating said shaft in one direction or the other, means mounted on said carrier for causing said carrier to travel in one direction when the shaft is rotated in a clockwise direction and for causing said carrier to move in the opposite direction when the shaft is 170- tated in a counter-clockwise direction, said operator controlled devices including a.

treadle, a friction clutch adapted to be shifted by said treadle in one direction, and aspring for moving said friction clutch'in the opposite direction.

9. In a filled bag sewing machine,th'e com-' bination ofa supporting column, a sleevemounted on said column for vertical adjust: ment, a bracket connectedv to said sleeve,

tracks carried by the bracketand extending.

outwardly away from the column, a carrier mounted on said tracks, a sewing head mounted .on said carrier, a motor mounted on the bracket, devices controlled by the .operator for rotating said shaft in one direction or the -"'other,-means. mounted on' said carrier for causing said carrier to travel in one direction rection and for causing said carrier -to move in the opposite direction when the shaft'is Y rdtated in a counter-clockwise direction, a

counterweight located in said column, a flexible connection ,co'nnected to the counterweight and to the sleeve and running over a pulley on 125 when the shaft is rotated in a clockwise diment, a bracket connected to said sleeve, tracks carried by the bracket and extending outwardly away from the column and supported solely by said column, a carrier mounted on said tracks, a sewing head mounted on said carrier, a motor mounted on the bracket, devices controlled by the operator for rotating said shaft in one direction or the other, and means mounted on said carrier for causing said carrier to travel in one direction when the shaft is rotated in a clockwise direction and for causing said carrier to-move in'the opposite direction when the shaft is rotated in a counterclockwise direction,

11. Ina filled bag sewing machine, the combination of a, supporting base, a single column rising therefrom, a sleeve adjustable on said column, a bracket mounted on the .column and extending laterally therefrom,

tracks mounted on the bracket and extending at right angles to said bracket, a carrier including a platform and supporting wheels adapted to move a back and forth on said tracks,- a cross bar connecting the outer ends of the tracks, a threaded shaft mounted in the bracket and in the cross bar, a motor mounted in the bracket, means for connecting the motor to said shaftincluding frictionclutch devices shiftable so as to impart rotation to said shaftin one direction or the other, said shaft having a spiral thread formed thereon, said carrier having a threaded" sleeve formed .thereon through which the threaded shaft extends so that when the shaft-is turned in one back and forth on said tracks, a cross barconnecting the outer ends of the tracks, a

threaded shaft mounted in the bracket and" in the cross bar, a motor mounted in the bracket, means for connecting the motor to said shaft including friction clutch devices shiftable so as to impart rotation to said shaft in one direction or the other, said shaft having a spiral thread formed thereon, said carrier having a threaded sleeve formed thereon through which'the threaded shaft extends so 7 that when the, shaft is turned in one direction,

the carrier will be moved outwardlyon the tracks, and when turned in the opposite direc tion, the carrier will be moved inwardly on the tracks, and a treadle for shifting said clutch members in one direction and a spring for shifting them in the opposite direction.

13. In a filled bag sewing machine, the

combination of a supporting base, a single column rising therefrom, a' sleeve adjustable on said column, a bracket mounted on the column and extending laterally therefrom, tracks mounted on the bracket and extending at right angles to said bracket, a carrier including a platform and sup orting wheels adapted to move back and forth on said tracks, a cross bar connecting the outer ends of the tracks, a threaded shaft mounted in the bracket and in the cross bar, thrust bearings carried by the cross bar and the bracket for preventing said shaft from moving endwise, a motor mounted in the bracket, means for connectingthe motor to said shaft including friction clutch devices shiftable so as to impart rotation to said shaft in one direction or the other, said shaft having a spiral thread .formed thereon, said carrier having a threaded sleeve formed thereon through which the threaded shaft extends so that when the shaft is turned in one directhe tracks, and when turned in .the opposite direction, the carrier will be moved inwardly on the tracks.

14. In a filled bag sewingmachine, the combination of a single column, a support 'adjustably mounted thereon, a bracketcarmed by said support, parallel trackslca'rried by, the bracket and extending outwardly therefrom, a cross bar connecting the outer ends of said tracks, a carrier including a platform androllers adapted to move back and forth on said tracks, a threaded shaft located between the tracks and journaled on the bracket, said shaft having a spiral thread formedthereon, said carrier having a depending member formed with a thread adapted to engage the thread-on the shaft,

whereby when said shaft is rotated, said carrier is moved back and forth, a motor mounted on said bracket for driving the shaft, manually controlled devices for reversing the rotation of said shaft, a sewing head suspended from said carrier, a sleeve having a splined connection with said shaft,

'- tion, the carrier will be moved outwardly on a belt wheel mounted on said sleeve,- and clutch devices between said belt wheel and saidsleeve, whereby when said sleeve is rotated in one direction through thesplined connection with the shaft it will'rotate saidbelt wheel and thus operate the sewing head, andwhereby said sleeve is disconnected from the belt wheel when rotated in the opposite direction by the splined connection with said shaft. 4 I

15. In a filled bag sewing machine, the combination of a supporting frame, a bracket mounted for vertical .ad'ustment, thereon,

tracks carried by said brac et,- and extending I outwardly from the bracket, a shaft mounted on said bracket and extending parallel with the tracks, a motor mounted on the bracket and connected to said shaft whereby saidshaft may be rotated in one direction or the other, a carrier mounted on said tracks, a sewing head mounted on the carrier, and devices mounted on said carrier whereby the rotation of the shaft in one direction will move the carrier outwardly away from the bracket,

and: at the same time, actuate the sewing head, and whereby when said shaft is rotated I on said bracketandextending parallel withthe tracks, a motormounted on the bracket and connected tosaid shaft whereby said shaft may be rotated in one direction or the other, a carrier mounted onsaid tracks, a sewing head mounted on the carrier, and devices mounted on said carrier whereby the rotation of the shaft in one direction will move the carrier outwardly away from the bracket, and at the same time, actuate the sewing head, and whereby when said shaft is rotated inthe opposite direction, the car'- rier will be moved inwardly toward the bracket without actuating the sewing head,

said means for connecting the motor to theshaft including friction clutch members, a treadle vfor moving said clutch members for connecting said shaft to the motor for caus ing the shaft'to rotate so as tomove the carrier away from the bracket, a bar for shifting said clutch members in the opposite'direction for reversing thev movement of the -shaft, and means mounted on the carrier for engaging and moving'said bar.

17. In a filled bag sewing machine, the

' combination of a supporting column, a sleeve adj'ustablymounted on said column, a bracket carried by said sleeve and projecting laterally thereform, parallel tracks mounted on said lars mounted on the bar and adapted to be engaged by the carrier for shifting said bar for manipulating the friction pulleys when 'the' carrier reaches predetermined positions,

and a sewing head mounted'on said carrier. i

18. In a filled bag sewing machine, thecom-i bination of a supporting column, asleeve adjustably mounted on said column, a bracket carried by said sleeve and projecting later ally therefrom, parallel tracks mounted on said bracket and extending outwardly from said sleeve, a cross bar connecting the outer ends of said tracks, athreaded shaft mounted in the bracket and cross bar and located between said tracks, a carrier mounted on said tracks and having a threaded lug depending therefrom through which said threaded shaft extends, a motor mounted on the bracket, friction pulley-s freely mounted on said shaft, means for operating one of the pulleys in one direction from said motor and the other pul-' 'ley in the other direction from said motor,

bracket and extending outwardly from said sleeve, a cross bar connecting the outer ends of said tracks, a threaded shaft mounted in the bracket and cross bar and located between said tracks, a carrier mounted on said tracks and having a threaded lug depending therefrom through which said threaded shaft extends, a motor mounted on the bracket, friction pulleys freely mounted on said shaft, and

means for operating one of the pulleys in one direction from said motor and the other,

pulley in the other d rection from said motor,

clutch members connected to the shaft, means for shifting said friction pulleys so as to engage one or the other of the clutch members, a yoke lever for shifting said friction puls leys, a treadle connected to the yoke lever J for -moving the same'in one direction, said yoke lever being mountedon the bar extending parallel with the tracks, adjustable colclutch members connected to the shaft, means for shifting said friction pulleys so as-to engage one or the other of the clutch members, a yoke lever for shifting said friction pulleys, a treadle connected to the yoke lever for moving'the same in one direction, said yoke lever being mounted on a bar extending parallel with the tracks, adjustable collars mounted on the bar and adapted to be engaged by the carrier for shifting said bar for manipulating the friction pulleys when the carrier reaches predetermined positions, a sewing head mounted on said carrier, and means operated by said shaft for actuating said sewing head only when the shaft is rotated so as to move the carrier in one direction.

'19. A filled bag sewing machine including in combination, a supporting means, a track carried thereby, a carrier adaptedto move back and forth on said track, a-sewing head mounted on said carrier and movable there-. with, a motor, a treadle, means controlled by said treadle for connecting the motor to the sewing head for operating the same and to the carrier for moving the carrier forward during the sewing 0peration,-and means for connecting the motor to the carrier for returning'the carrier to initial starting posi tion. c V

20. In a filled bag sewin machine, the combination of a support, airacket carried thereby, tracks mounted on said bracket and projecting laterally therefrom, a carrier movable back and forth on said tracks, a sewing head mounted on said carrier, an actuating device mounted on said bracket, and devices operated by said actuatingdevice for movlng the carrier back and forth on said tracks, and means operated by said devices effective to actuate the sewing head when the carrier is moved in one direction and ineffective 'to actuate the sewing head when the carrier is moved in the opposite direction.

lot

moved in one direction and-indective to actuate the sewing head when the carrier is moved 'in the opposite direction.

22 In a filled bag sewing machine, the combination of a support, tracks carried by the support and projecting laterallytherefrom, a carrier mounted on said tracks and adapted to move back and forth thereon, a threaded shaft extending lengthwise of said tracks, means depending from said carrier and enc gaging said threaded shaft, actuating devices mounted on saidsupport for rotating said shaft for moving the carrier bac kand forth,

a sewing headmounted on said carrier and depending therefrom, means actuated by said threaded shaft effective to actuate thesewing head when the carrier is moved in one direction and ineffective to actuate the sewing head when the carrier is moved in the opposite "direction, andmanually actuated devices for controlling said actuating devices whereby said shaft may be rotated in reverse directions at'will'. v

' 23. in a filled bag sewing machine, the com bination of a support, tracks carried by said, support and projecting laterally therefrom, a carrier mounted on said tracks and movable back and forth thereon, a sewing head mounted on said carrier and movable therewith, an operating device extending lengthwiseof said tracks, actuating means mounted on said support for actuating said operating device, said carrier having a connection with said operating device whereby it is moved back and forth on said tracks, and means actuated by said operating device eflective to actuate the sewing head when the carrier is moved in one direction and ineffective to actuate the sewing headwhen the carrier is moved in the opposite direction.

24. In a filled bag sewing machine, the combination of a support, tracks carried by said support and pro ecting laterally therefrom, a carrier mounte on said tracks and movable back and 'forth thereon, a sewing head mounted on said carrier and movable therewith, an operating device extending lengthwise of said tracks, actuating means mounted on said supporttor actuating said operating device, said carrier having a connection with said operating device whereby it is moved back masses and forth on said tracks, means mounted on said carrier for operating "said sewing head only from said operating device when said carrier is moved in one direction, and manually operated means for controlling the actuating means for said operating device.

25. In a filled bag sewing machine, the com? bination of a support, tracks. carried by said support and projecting laterally therefrom, a carrier mountedon said tracks and movable back and forth thereon, a sewing head mounted on said carrier'and movable therewith, an operating device extending lengthwise-of said tracks, actuating means mounted on said support for actuating said operating device, said carrier having a connection with said operating device, whereby it is moved back and forth on said tracks, means mounted on said carrier for operating said sewing head only from said operating device when said carrier is moved in one direction-,'and manually operated means for controlling the actuating means for said operating device, said manually operated means including a spring for insuring the connection of the actuating means to said operating-device when said manually operated means is released,

26. lln a filled bag sewing machine, the combination of a support, tracks carried by said 7 support, a carrier movable back and forth on said tracks, a sewing head mounted on said carrier, manually controlled means for moving the carrier back and forth on said tracks, said manually controlled means in- 1 cludinga spring efi'ective to causea movementol the carrier in one direction on said tracks when said manually controlled means 18 released by the operator.

2?. in a tilled bag sewing machine, the combination of a support, tracks carried by said ice support, a carrier movable back and forth on said tracks, a sewing head mounted on said carrier, manually controlledmeans for movring the carrier back and forth on said tracks,

.said manually controlled means including-a spring effective to cause a'movement of the carrier in one direction on said tracks when said, manually controlled means is released by the operator, and a stop located in the path of movement of the carrier and actingwhen engaged by the carrier to render said manually controlled means ineflective to operate inentof the carrier in one direction on said tracks when said manually controlled means isreleased by the operator, and a stop located in the path of movement of the carrier and acting when engaged b the carrier to render said manually contro led means ineffective to operate the carrier, said stop hein adjustable to various set positions.

' n testimony whereof, we aflix our signatures.

NORMAN V. CHRISTENSEN. WALTER M. HANNEMAN. 

